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Only print out question_mark lint when it actually triggered

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This commit is contained in:
Peter Fürstenau 2018-12-19 20:55:01 +01:00
parent 18584698ee
commit 65c35333a4
1 changed files with 21 additions and 18 deletions
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11
clippy_lints/src/question_mark.rs
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@ -73,7 +73,7 @@ impl Pass {
then {
let receiver_str = &Sugg::hir(cx, subject, "..");
let mut replacement_str = String::new();
let mut replacement: Option<String> = None;
if let Some(else_) = else_ {
if_chain! {
if let ExprKind::Block(block, None) = &else_.node;
@ -81,14 +81,16 @@ impl Pass {
if let Some(block_expr) = &block.expr;
if SpanlessEq::new(cx).ignore_fn().eq_expr(subject, block_expr);
then {
replacement_str = format!("Some({}?)", receiver_str);
replacement = Some(format!("Some({}?)", receiver_str));
}
}
} else if Self::moves_by_default(cx, subject) {
replacement_str = format!("{}.as_ref()?;", receiver_str);
replacement = Some(format!("{}.as_ref()?;", receiver_str));
} else {
replacement_str = format!("{}?;", receiver_str);
replacement = Some(format!("{}?;", receiver_str));
}
if let Some(replacement_str) = replacement {
span_lint_and_then(
cx,
QUESTION_MARK,
@ -106,6 +108,7 @@ impl Pass {
}
}
}
}
fn moves_by_default(cx: &LateContext<'_, '_>, expression: &Expr) -> bool {
let expr_ty = cx.tables.expr_ty(expression);